SciShow: SPF Doesn't Mean What You Think It Means

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: SPF seems pretty simple. Find a high number, rub some on your nose, and you're ready for some sunshine. Unfortunately the science behind it is a little more complicated. Hosted by: Michael Aranda SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Adam Brainard, Greg, Alex Hackman, Sam Lutfi, D.A. Noe, الخليفي سلطان, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.researchgate.net/profile/Giulio_Pirotta/publication/283515177_An_overview_of_sunscreen_regulations_in_the_world/links/563cdb7508aec6f17dd7e0d6/An-overview-of-sunscreen-regulations-in-the-world.pdf?origin=publication_detail https://onlinelibrary.wiley.com/doi/full/10.1111/ics.12226 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3514825/ https://www.skincancer.org/prevention/seal-of-recommendation/testing https://share.upmc.com/2014/07/infographic-abcs-uv-difference-uva-uvb-uvc/ https://www.who.int/uv/faq/whatisuv/en/index2.html https://onlinelibrary.wiley.com/doi/abs/10.1034/j.1600-0781.2003.00007.x https://www.sciencedirect.com/science/article/pii/S1027811714000494#bib13 https://pubs.rsc.org/en/Content/ArticleLanding/2013/PP/C2PP25127B#!divAbstract


Click here to view video on YouTube.